[ARTICLE  2.— EXTRACTED  FROM  THE  BULLETIN  OF  THE  UNITED  STATES 
FISH  COMMISSION  FOR  1892.  Pages  51-56.] 


DESCRIPTION  OF  A  NEW  SUCKER, 


PANTOSTEUS  JORDANI, 


FROM  THE  UPPER  MISSOURI  BASIN. 

BY 


BARTON  W.  EVERMANN,  F»1t.  D., 
ASSISTANT,  U.  S.  FISH  COMMISSION. 


[Date  of  publication,  January  27,  1893.] 


WASHINGTON  : 

GOVERNMENT  PRINTING  OFFICE 

1  89  3. 


511 
Ey  a.*- 


I 

f 

2-DESCRIPTION  OF  A  NEW  SUCKER,  PANTOSTEUS  JORDANI,  FROM  THE 

UPPER  MISSOURI  BASIN. 


BY  BARTON  W.  EVERMANN,  PH.  D., 
Assistant,  U.  S.  Fish  Commission. 


In  the  following  paper  is  given  a  description  of  a  new  species  of  sucker,  Pantos¬ 
teus  jordani,  together  with  a  discussion  of  the  distribution  of  the  various  species  of 
the  genus  Pantosteus ,  it  being  thought  advisable  to  publish  this  in  advance  of  the 
completion  of  a  report  upon  investigations  in  the  Black  Hills  region  upon  which  I  am 
now  engaged,  and  of  which  this  is  to  be  regarded  as  forming  a  part. 

PANTOSTEUS  JORDANI  sp.  nov. 

Pantosteus  virescens,  Jordan,  Bull.  4,  vol.  iv,  U.  S.  Nat.  Mus.,  1878,  780  (Sweet  Grass  Hills,  Montana). 
Catostomus  discobolus,  Evermann,  Bull.  U.  S.  Fish  Comm.  1891,  pi.  xvm,  fig.  1,  41  (Red  Rock  River, 
Red  Rock,  Mont.,  and  Beaverhead  River,  Dillon,  Mont.). 

Head,  4^  to  5£;  depth,  4Jto5;  eye,  4.J  to  5;  snout,  2  to2^;  interorbital  width,  2|; 
D.  i,  10;  A.  i,  7;  scales,  about  16-96-14,  48  before  the  dorsal. 

Body  rather  stout,  subterete,  back  gently  and  regularly  arched  from  snout  to  ori¬ 
gin  of  dorsal,  thence  nearly  straight  to  base  of  caudal;  head  small,  short,  and  conic, 
interorbital  space  broad  and  but  little  convex;  snout  long,  about  half  length  of  head; 
mouth  large,  broad;  lower  lip  broad,  very  little  incised,  covered  with  tubercles  of 
moderate  size;  upper  lip  also  broad,  extending  well  down  on  sides  of  mouth,  tubercles 
in  about  3  or  4  rows ;  cartilaginous  sheath  of  lower  lip  well  developed ;  caud  al  peduncle 
stout,  not  much  compressed;  scales  small  and  much  crowded  anteriorly,  lateral  line 
straight  and  near  axis  of  body;  dorsal  small,  its  height  14  in  head  and  a  little  greater 
than  base  of  fin,  its  origin  considerably  nearer  snout  than  base  of  caudal;  pectorals 
long,  about  equal  to  length  of  head,  reaching  more  than  half  way  to  the  ventrals; 
ventrals  short,  not  reaching  vent;  anal  about  4  longer  than  pectorals,  reaching  base 
of  caudal ;  fbntanelle  reduced  to  a  very  narrow  slit,  practically  obliterated  in  the  older 
individuals;  peritoneum  very  black;  air-bladder  small,  the  posterior  part  long  and 
very  slender. 

Color,  dark-greenish  above,  scales  covered  very  closely  down  to  the  paired  fins 
with  innumerable  fine  dark  or  greenish  specks,  most  numerous  on  back;  under  parts 
pale;  in  life,  or  immediately  upon  putting  in  alcohol,  some  specimens  were  observed  to 
have  a  broad  orange  band  along  the  side,  this  probably  being  a  marking  present  dur¬ 
ing  the  breeding  season.  Young  specimens  2  to  3  inches  long  are  frequently  mottled 
very  much  like  the  young  of  Catostomus  teres  and  C.  nigricans . 


\ 


51 


52 


BULLETIN  OF  THE  UNITED  STATES  FISH  COMMISSION. 


This  interesting  species  is  based  upon  the  following  material: 


u.  s. 

Nat. 

Mus. 

No. 

No.  of 
speci¬ 
mens. 

Locality. 

Date. 

Collector. 

i 

439G3 

13 

Red  Rock  River.  Reft  Rock,  Montana . 

July  27,189- 

1 

B.  Cl  apt  am. 

439(34 

13 

Beaverhead  River.  Dillon,  Montana . 

July  27. 1891 

Evermaur.  &  Jenkins. 

185 

Wliitewood  Creek.  Deadwood,  South  Dakota . 

Oct.  6.  1892 

B.  W.  Evermann. 

45 

Spearttsli  Creek.  Spearfish.  South  Dakota . 

Oct.  7, 1892 

Do. 

3 

Chicken  Creek,  near  Spearfish,  South  Dakota . 

Oct.  8,  1892 

Do. 

5 

Crow  Creek.  Gammon's  Ranch,  near  Spearfish,  South 
Dakota. 

Oct.  8, 1892 

Do. 

3 

Belle  Fourche  River,  Belle  Fourclie,  South  Dakota . 

Oct.  11,1892 

Do. 

13 

Rapid  Creek,  Rapid,  South  Dakota . 

Oot.  15.1892 

Do. 

2 

Hat  Creek,  Ardmore,  South  Dakota . 

Oct.  21,1892 

Do. 

In  the  report  upon  the  explorations  in  Montana  and  Wyoming  by  Dr.  O.  P. 
Jenkins  and  myself,  I  hesitated  to  regard  the  specimens  which  we  collected  at  Red 
Rock  and  Dillon  as  being  new,  and  identified  them  as  Gatostomus  discobolus  Cope. 

The  narrow  fontauelle  and  the  cartilaginous  sheath  of  the  lower  lip,  together  with 
the  uncertainty  as  to  the  exact  locality  from  which  Prof.  Cope’s  types  came,  seemed  to 
favor  this  identification.  Upon  the  suggestion  of  Dr.  Jordan  that  the  types  of  G. 
discobolus  were  probably  the  young  of  C.  latipinnis  and  that  my  specimens  were  prob¬ 
ably  an  undescribed  species,  I  was  induced  to  make  a  reexamination  of  the  question. 
This  was  particularly  desirable  in  view  of  the  fact  that  so  much  additional  material 
had  resulted  from  my  recent  explorations  in  the  Black  Hills. 

Prof.  Cope’s  types  of  Gatostomu-i  discobolus  consisted  of  “two  specimens,  one 
certainly,  the  other  probably,  from  the  Green  River,  Wyoming,”*  and  can  not  now  be 
found,  but  there  are  twelve  specimens  from  the  Colorado  Basin  in  the  National  Muse¬ 
um  under  the  name  C.  discobolus,  presumably  identified  as  such  by  Prof.  Cope.  These 
are  quite  certainly  young  specimens  of  Pantosteus  delphinus,  and  I  am  inclined  to  the 
belief  that  the  types  of  G.  discobolus  were  also  the  young  of  this  species  rather  than 
the  young  of  C.  latipinnis.  Should  this  be  the  case,  the  species  would  stand  as  Pan¬ 
tosteus  discobolus  (Cope),  discobolus  having  priority  over  delphinus. 

While  this  question  can  not  be  definitely  determined,  Prof.  Cope’s  description  of 
G.  discobolus  applying  equally  well  to  G.  latipinnis  and  P.  delphinus ,  the  probabilities 
are  strongly  in  favor  of  this  view,  and  I  therefore  adopt  the  name  discobolus  instead 
of  delphinus  for  the  Pantosteus  of  the  Colorado  River. 

As  remarked  elsewhere  in  this  paper,  all  the  other  specimens  in  the  Museum  which 
have  been  called  G.  discobolus  (and  which  are  from  Lapwai  Creek,  Idaho),  are  undoubt¬ 
edly  young  specimens  of  G.  catostomus. 

An  examination  of  the  air  bladder  in  several  species  of  suckers  shows  marked 
differences.  In  all  species  of  Pantosteus  examined  (P.  generosus,  plebeius ,  discobolus 
and  jordani)  the  air  bladder  is  quite  small,  the  first  (anterior)  compartment  being 
quite  short,  while  the  second  is  very  long  and  slender,  usually  to  3  times  the  length 
of  the  first. 

In  one  specimen  of  P.  discobolus  the  air  bladder  was  large,  but  this  specimen  had 
been  previously  cut  open  and  examined  by  some  one;  the  air  bladder  was  detached, 
and  may  possibly  belong  to  another  fish. 


*Hayilen’8  Geological  Survey  of  Wyoming,  4th  Annual  Report,  1870,  435. 


PANTOSTEUS  JORDANI. 


53 


In  all  species  of  Gatostomus  examined  ( G .  latipinnis ,  catostomus ,  ardens,  and  gri- 
sens),  the  air  bladder  is  large,  very  much  larger  than  in  any  Pantosteus  and  very  differ¬ 
ent  in  appearance  except  in  G.  latipinnis ,  in  which  the  air  bladder  greatly  resembles 
that  of  Pantosteus. 

Pantosteus  jordani  is  rather  intermediate  in  its  structure  between  Pantosteus  and 
Gatostomus ,  but,  on  the  whole,  its  characters  indicate  a  closer  relationship  with  the 
species  of  the  former  genus,  in  which  it  should  be  placed  if  Pantosteus  and  Gatosto¬ 
mus  are  to  be  regarded  as  generically  distinct,  the  propriety  of  which  is  doubtful. 
The  high  development  of  the  cartilaginous  sheath  is  a  character  possessed  by  all  the 
species  of  Pantosteus  and  is  not  found  among  the  species  of  Gatostomus ,  except  in  G. 
catostomus ,  where  it  is  more  pronounced  than  in  any  other  species  of  that  genus. 

The  entire  obliteration  of  the  fontauelle,  even  in  the  most  typical  species  of  Pan¬ 
tosteus ,  is  a  question  of  age,  the  fontanelle  being  more  or  less  evident  as  a  very  narrow 
slit  in  the  young  of  all  the  species  of  which  the  young  are  known. 

Pantosteus  jordani  is,  on  the  one  hand,  most  closely  related  to  Pantosteus  virescens 
Cope  and  P.  discobolus  (Cope),  while  on  the  other  it  resembles  G.  catostomus  (Forst.). 
It  is  the  most  abundant  and  most  generally  distributed  species  of  the  family  in  the 
streams  flowing  from  the  Black  Hills,  and  frequents  the  clear,  colder,  and  swifter 
parts  of  the  streams.  With  the  exception  of  Hat  Creek,  all  the  streams  in  which  it 
has  been  found  are  clear  and  cold.  We  did  not  find  it  at  all  in  the  South  Fork  of  the 
Cheyenne  nor  in  the  Loup  or  Beaver  Creek  at  Ravenna.  It  is  apparently  a  fish  of 
small  size  which  delights  in  the  upper  reaches  and  colder,  clearer  portions  of  the 
smaller  mountain  streams  of  the  Upper  Missouri  basin. 

I  name  this  interesting  species  for  my  teacher  and  friend,  President  David  Starr 
Jordan,  of  Leland  Stanford  Junior  University. 


Pantosteus  jordani  sp.  nov.  Jordan's  Sucker.  About  four-fiftlis  natural  size. 


In  connection  with  my  study  of  this  species  I  was  led  to  an  examination  of  all  the 
specimens  of  Pantosteus  and  the  related  species  of  Gatostomus  to  be  found  among  the 
collections  now  in  the  U.  S.  National  Museum.  Dr.  Jordan,  in  his  Catalogue  of  Fishes 
of  North  America,  published  in  1885,  recognized  but  three  species  of  Pantosteus ,  viz, 
plebeius ,  generosus,  and  guzmaniensis ,  and  expressed  the  opinion  that  Minomus  bard  us 
and  M.  delphinus  of  Cope  should  be  considered  identical  with  P.  plebeius ,  and  further, 
that  P.  virescens  Cope  is  the  same  as  Acomus  guzmaniensis  Girard. 


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BULLETIN  OF  THE  UNITED  STATES  FISH  COMMISSION. 


The  collections  made  in  1880  in  Colorado  and  Utah  by  Dr.  Jordan  and  myself 
contain  numerous  specimens  of  Pantosteus  from  the  Rio  Grande,  Colorado,  and  Utah 
basins,  the  study  of  which  led  Dr.  Jordan  to  admit  the  three  species,  P.  plebeius , 
generosus ,  and  delphinus .  He  at  this  time  regarded  Acomus  guzmaniensis  as  identical 
with  P.  plebeius,  and  P.  virescens  as  being  probably  the  same  as  P.  delpliinus. 

These  collections  of  1889  suggested  the  strong  probability  of  the  limited  distribution 
of  each  species  of  this  genus,  and  that  each  is  likely  confined  to  a  single  hydrographic 
basin.  My  examination  of  the  types  of  all  the  nominal  species  now  to  be  found,  and 
the  comparison  with  them  of  all  the  other  material  obtainable,  confirm  this  view.  I 
can  see  no  differences  of  any  value  among  the  specimens  from  the  different  places  in 
the  Rio  Grande  basin,  and  must  regard  them  all  as  being  identical  with  Baird  and 
Girard’s  Catostomus plebeius,  the  types  of  which  came  from  the  Rio  Mimbres,  a  tribu¬ 
tary  of  Lake  Guzman,  which  is  in  the  Rio  Grande  basin.  All  the  specimens  from  the 
Colorado  basin  are  easily  referable  to  P.  delpliinus  (Cope),  while  all  those  from  the 
Utah  basin  are  with  equal  certainty  P.  generosus  (Girard). 

The  only  specimen  from  the  Arkansas  basin  is  the  type  of  Cope’s  P.  virescens, 
which  is  said  to  have  been  taken  in  the  Arkansas  River  at  Pueblo,  Colo.  This 
specimen  is  about  14  inches  in  total  length,  and  is  in  good  condition.  It  is  most 
closely  related  to  P.  discobolus ,  and,  like  that  species,  has  a  slender  caudal  peduncle 
and  very  small  scales,  which  I  count  as  17-103-10,  and  45  before  the  dorsal.  I  am 
not  sure  that  this  is  really  distinct  from  P.  discobolus ,  and  doubt  if  the  specimen  came 
from  the  Arkansas  River. 

The  synonymy  of  the  species  of  Pantosteus  should  stand  as  follows: 

PANTOSTEUS  PLEBEIUS  (B.  &  G.). 

Catostomus  plebeius  B.  &  G.,  Proo.  Acad.  Nat.  Sei.  Phila.  1854,  28  (Rio  Mimbres,  tributary  of  Lake 
Guzman,  Chihuahua);  Agassiz,  Am.  Jour.  Sci.  &  Arts,  2d  scries,  xix,  208,  1855. 

Minomus  plebeius,  Grd.,  Proc.  Acad.  Nat.  Sci.  Phila.  1856,  173  (Rio  Mimbres,  Chihuahua);  ibid.,  U.  S. 

aud  Mex.  Bound.  Survey,  1858,  38,  pi.  xxm,  figs.  6-10  (Rio  Mimbres,  Chihuahua). 

Catostomus  plebeius,  Gunther,  Cat.  Fishes,  vn,  15,  1868  (Rio  Mimbres). 

Pantosteus  plebeius,  Jordan  &  Gilbert,  Synopsis,  122,  1883  (Lake  Guzman);  Jordan,  Bull.  U.  S.  F.  C., 
ix,  for  1889  (1891),  19  (Rio  Conejos,  Colo.,  and  Rio  Grande  at  Del  Norte  and  Alamosa,  Colo.). 
Catostomus  ( Acomus )  guzmaniensis  Grd.,  Proc.  Acad.  Nat.  Sci.  Phila.  1856,  173  (Janos  River,  tributary 
of  Lake  Guzman,  Chihuahua). 

Acomus  guzmaniensis  Grd.,  U.  S.  and  Mex.  Bound.  Survey,  1858,  39,  pi.  xxm,  figs.  6-10  (Janos  River, 
Chihuahua). 

Catostomus  guzmaniensis,  Gunther,  Cat.  Fishes,  vn,  15, 1868  (Janos  River,  Chihuahua). 

Pantosteus  jarrovii,  Cope  and  Yarrow,  Zoology  Wheeler  Survey,  V,  674,  pi.  xxix,  figs.  2  and  2a,  1875, 
only  in  part  (San  Ildefonso  and  Taos,  New  Mexico). 

Habitat:  Rio  Grande  Basin. 

PANTOSTEUS  VIRESCENS  (Cope). 

Pantosteus  virescens  Cope,  Zool.  Wheeler  Survey,  1875,  675  (Arkansas River,  Pueblo,  Colo.);  ibid.,  Jor¬ 
dan  &  Copeland,  Check  List,  1876,  156;  ibid.,  Jordan,  Bull.  U.  S.  Geol.  Surv.  Terr.,  iv,  416, 
1878  (Arkansas  River). 

Habitat:  Arkansas  River. 


PANTOSTEUS  JORDANI. 


55 


PANTOSTEUS  GENEROSUS  (Grd.). 

^  Catostomus  (Acomns)  generosus  Grd.,  Proc.  Acad.  Nat.  Sci.  Pliila.  1856, 171  (Cottonwood  Creek,  Utah). 

^  Acomns generosus  Grd.,  P.  R.  R.  Survey,  1858,  221  (Cottonwood  Creek,  Utah). 

Catostomus  f  generosus,  Cope,  Plagopterinse  and  Ichtliyol.  of  Utah,  1871,  7  (Provo,  Utah)  ;  ibid.,  Jordan 
y  and  Copeland,  Check  List,  1876, 156. 

Panto8teu8  generosus,  Jordan,  Bull,  xii,  U.  S.  Nat.  Mus.,  1878,  183  (Great  Basin  of  Utah);  ibid.,  Jordan 
and  Gilbert,  Synopsis,  1883,  123  (only  in  part);  ibid.,  Jordan,  Cat.  Fish.  N.  A.,  1885,  17 ;  ibid., 
Bull,  ix,  U.  S.  Fish  Com.  for  1889  (i891).  31  and  35  (Jordan  River,  Sevier  River,  and  Utah  Lake). 

Minornus platgrhynchus  Cope,  Proc.  Am.  Philo.  Soc.  Phila.  1871,  131  (Provo,  Utah);  ibid.,  Plagopterimc 
and  Ichtliyol.  of  Utah,  1874,  6. (Provo,  Utah). 

Pantosteus platyrhynchus,  Cope  &  Yarrow,  Zool.  Wheeler  Survey,  1875,  673,  pi.  xxix,  figs.  3  and  3a 
(Provo  River,  Utah);  ibid.,  Jordan  &  Copeland,  Check  List,  156,  1876;  ibid.,  Bull,  xii,  U.  S. 
Nat.  Mus.,  1878,  183  (Utah  Lake  and  tributaries);  ibid.,  Jordan  &  Gilbert,  Synopsis,  1883, 
123  (Utah  Lake). 

Minornus  jcirrovii  Cope,  Proc.  Am.  Phil.  Soc.  Phila.  1871,  v,  129-139  (Provo,  Utah). 

Panto8teu8  jarrovii,  Jordan  &  Copeland,  Cheek  List,  1876,  156. 

Catosiomu8  guzmaniense,  Cope  &  Yarrow,  Zool.  Wheeler  Survey,  1875,  679  (Utah  Lake). 

Habitat:  Great  Salt  Lake  Basin. 


PANTOSTEUS  DISCOBOLUS  (Cope). 

Catostomus  discobolus  Cope,  Hayden’s  Geol.  Survey  of  Wyo.,  1870,  135  (two  specimens,  one  certainly, 
the  other  probably,  from  Green  River,  Wyoming). 

Minornus  delphinus  Cope,  Hayden’s  Geol.  Survey  of  Wyo.,  1870,  435  (probably  from  Green  River). 
Pantostcus  dolphinus,  Jordan  &  Copeland,  Check  List,  1876,  156  (misprint  for  delphinus) . 

Pantosleus  delphinus,  Jordan  &  Gilbert,  Synopsis,  1883,  122  (probably  from  Green  River) ;  ibid.,  Jordan, 
Bull,  ix,  U.  S.  Fish  Comm,  for  1889  (1891),  27  (Eagle  River,  Gypsum,  Colo. ;  Gunnison  and 
Uncompahgre  rivers,  Delta,  Colo.;  Rio  de  las  Animas  and  Rio  Florida,  Durango,  Colo.). 
f  Minornus  bardus  Cope,  Hayden’s  Geol.  Survey  of  Wyo.,  1870,  436  (probably  Green  River). 

Pantosteus  jarrovii,  Cope  &  Yarrow,  Zool.  Wheeler  Survey,  1875,  674,  in  part  only  (Zuni  River,  N.  M.,  and 
Tierra  Amarilla,  N.  M.  The  figures,  pi.  xxix,  2  and  2a,  are  P.  plebeius). 

Catostomus  discobolus  Cope,  Proc.  Am.  Philo.  Soc.  Phila.  1874,  138;  ibid.,  Plagopterime  and  Ichtliyol.  of 
Utah,  1874,10  (“  Zuni  River,  Arizona;”  “Arizona”);  ibid.,  Cope  &  Yarrow,  Zool.  Wheeler 
Survey,  1875,  677  (Zuni  River,  N.  M. ;  “Arizona”). 

Habitat:  Basin  of  the  Colorado  River. 

In  the  appended  table  is  given  a  list  of  all  the  specimens  of  Pantostcus  that  can 
now  be  found  in  the  IJ.  S.  National  Museum,  together  with  my  identification  of  each. 

All  the  specimens  which  have  been  called  P.  jarrovii  that  I  have  been  able  to  find 
are  apparently  from  the  Rio  Grande  and  Utah  basins,  those  from  the  former  being  P. 
plebeius  and  those  from  the  latter  P.  generosus. 

Those  reported  by  Cope  and  Yarrow  from  the  Zuni  river,  New  Mexico,  can  not  be 
found,  but  were  most  likely  P.  discobolus ,  which  is  known  to  occur  there. 

There  are  seven  bottles  of  suckers  in  the  Museum,  labeled  Catostomus  discobolus. 
Three  of  these  lots  are  from  the  Colorado  Basin  and  are  almost  certainly  young  spec¬ 
imens  of  P.  discobolus.  They  have  been  regarded  by  Dr.  Jordan  as  the  young  of 
Catostomus  latipinnis ;  but  I  find,  upon  comparing  them  with  small  specimens  of  lati¬ 
pinnis  from  the  Uncompahgre  and  Sevier  rivers,  that  the  foutanelle  is  more  nearly 
obliterated,  the  lower  lip  is  broader  and  less  deeply  incised,  and  the  cartilaginous 
sheath  much  more  developed  than  in  latipinnis  Furthermore,  they  are  not  distin¬ 
guishable  by  me  from  specimens  of  what  has  been  called  P.  delphinus  of  the  same  size 


56 


BULLETIN  OF  THE  UNITED  STATES  FISH  COMMISSION. 


from  the  Uncompaligre  River.  The  cartilaginous  sheath  is  quite  as  well  developed, 
the  scales  are  equally  small,  and  the  fontauelle  is  as  imperfect. 

All  the  other  specimens  in  the  Museum  labeled  Catostomus  discobolus  were  col¬ 
lected  by  Gapt.  Bendire,  in  Lapwai  Creek,  Idaho,  which  is  in  the  Snake  River  Basin, 
and  are  undoubtedly  the  young  of  Catostomus  catostomus. 

The  specimens  collected  at  Amarilla,  1ST.  Mex.,  by  Dr.  Y arrow  have  the  caudal 
peduncle  a  little  deeper  than  in  other  specimens  of  discobolus  with  which  I  have  com¬ 
pared  them,  but  they  are  certainly  not  generosus ;  they  may  possibly  be  plebeius ,  but 
are  most  likely  discobolus. 

According  to  this  view,  Prof.  Cope’s  types  of  P.jarrovii  from  the  Rio  Grande  are 
plebeius,  those  from  the  Utah  basin  are  generosus,  and  those  (if  any)  from  the  Colo¬ 
rado  basin  are  discobolus.  All  these  specimens  are  small  and  some  of  them,  partic¬ 
ularly  those  said  to  be  from  Zufii,  are  in  such  poor  condition  as  to  render  certain 
identification  impossible.  It  is  x>ossible  that  the  locality  labels  have  been  confused. 

In  P.  discobolus  the  lower  lip  is  somewhat  broader  and  the  tubercles  smaller 
than  in  plebeius  and  generosus.  It  bears  a  close  external  resemblance  to  C.  latipinnis , 
especially  in  the  general  shape  of  the  body,  the  slender  caudal  peduncle,  and  the  small, 
subequal  scales,  but  the  eye  is  smaller. 

List  of  specimens  of  Pantosteus  now  found  in  U.  S.  National  Museum. 


Nat. 

Mus. 

No. 

No.  of 
speci¬ 
mens. 

20913 

16 

16758 

1 

15763 

4 

168 

1 

168 

5 

27080 

30 

18008 

5 

18009 

9 

18011 

35 

5910 
(3029)  > 
41645) 
(3047) 1 
41659 S 

1 

13 

13 

15783 

4 

12914 

4 

15791 

4 

12906 

3 

15802 

1 

30807 

1 

30807 

1 

260 

2 

256 

3 

F.C.  ) 

(3006) > 
41624) 
(3027)1 
41631 S 

25 

5 

(3020) > 
41627) 

15 

When 

col- 


1873 

1874 
1872 
1851 
1851 
1874 
1874 
1874 
1874 


1889 

1880 

1873 

1873 

1873 

1872 

1873 

1881 

1881 

1854 

1854 

1889 

1889 

1889 


Collector. 


Dr.  H.  C.  Yarrow _ 

C.  E.  Aiken . 

Yarrow  &  Hen  aha  w 

J.H.  Clark . 

. do . 

Dr.  H.  C.  Yarrow _ 

Cope  &  Shedd . 

Dr.  H.  C.  Yarrow - 


. do . 

Lieut.  Beale . 

Jordan  &  Evermann 

. do . 

H.  W.  Hensliaw. 


Dr.  C.  G.  Newberry. 


.ao  . 


Yarrow  &  Hensliaw 
H.  W.  Hensliaw . 


P.  Madsen . 

Jordan  &  Madsen. . . 

Dr.  C.  B.  Kennerly _ 

Lieut.  E.  P.  Beckwith. 
Jordau  &  Evermann. 


-do 

-do 


Locality. 


“Amarilla,  N.  Mex 

Arkansas  River,  Pu¬ 
eblo,  Colo. 

Provo,  Utah . 

Rio  Mimbres,  Lake 
Guzman,  Chihuahua. 
Rio  Mimbres,  Lake 
Guzman. 

“Rio  Grande,  II  de 
Fonso.” 

Nutrias,  Colo . 


‘New  Mexico’’ . 

_ do . 


Ojo  de  Gallo,  N.  Mex. . 
S’Rio  Grande,  Alamosa, 
}  Colo. 

5  Rio  Conejos,  Alamosa, 

}  Colo. 

Zuni,  N.  Mex . 

“Arizona” . 

. do . 

Provo,  Utah  . . 


Zuni,  N.  Mex.  (Local¬ 
ity  probably  wrong.) 

Utah  Lake . 

Uta  h  Lake,  Provo, 
Utah. 

Rio  Janos,  Lake  Guz¬ 
man,  Chihuahua. 

Cottonwood  Creek, 
Utah. 


Provo,  Utah 


SUncompahgre  River, 
(  Delta,  Colo. 

Jordan  River,  Utah. . . 


Name  under  which  entered 
in  National  Museum. 


Pantosteus  generosus,  part 
of  the  types  of  P.jarrovii. 

Pantosteus  guzmaniensis, 
type  of  P.  virescens. 

Pantosteus  generosus,  types 
of  P.  platyrhynchus. 

Pantosteus  plelieius  (type 
of  Catostomus  plebeius). 

Pantosteus  plebeius,  types.. 

Pantosteus  generosus,  part 
of  types  of  P.  jarrovii. 

Pantosteus  generosus,  part 
of  types  of  P.  jarrovii.  (?) 

Pantosteus  generosus,  part 
of  types  of  P.  jarrovii. 

. do . 

Pantosteus  generosus . 

^Pantosteus  plebeius . 

I . do . 


Catostomus  discobolus . 

. do . . 

. . do . 

Pantosteus  generosus,  part 
of  the  types  of  P.jarrovii. 
. do . . . 


Pantosteus  generosus... 
. do . 


Pantosteus  guzmaniei 
(type  of  Acomus  guzni 
iensis). 

Pantosteus  generosus  (t, 
of  Acomus  generosus) 

Pantosteus  generosus . . . 


|  Pantosteus  delphinus. 
Pantosteus  generosus. 


Identification. 


Pantosteus  discobolus. 
Pantosteus  virescens. 
Pantosteus  generosus. 
Pantosteus  plebeius. 


Do. 


Do. 


Do. 


Do. 


Do. 

Do. 

Do. 


Do. 

Pantosteus  discobolus. 
Do. 

Do. 

Pantosteus  generosus. 


Do. 


Do. 

Do. 

Pantosteus  plebeius. 


Pantosteus  generosus. 
Do. 

Pantosteus  discobolus. 
Pantosteus  generosus. 


Washington,  January  25,  1893. 


